Envelop.



GEORGE J'- I-IARTKE, OF CINCINNATI, OHIO.

ENVELOP.

Continuation of application Serial No. 403,711, filed November 25, 1907.

Serial No. 468,569.

Specification of Letters Patent.

Patented. July 2, 1912. This application filed December To all whom itmay concern:

Be it known that I, GEORGE J. HARTKE, a

citizen of the United States, residing at Cincinnati, in the county ofHamilton and State of Ohio, have invented certain new and usefulImprovements in Envelops, of which the following is a specification. Thepresent invention relates to an envelop of the class shown and describedin Letters Patent No. 532,206 grant-ed January 8th, 1895, to A. D.Klaber which is known to the trade by the name Neostyle.

The Neostyle envelop as shown in the patent and as heretofore made isopen to several objections. One of these is that during the fillingoperation the loose side flap is held in place only by reason of thefact that it projects a short distance beneath, or, to state itdifferently, is partly overlapped by the adjacent side of the bottomflap but otherwise it is not engaged by any part of the envelop thatwould have a tendency to hold it in place. Being loose and disengaged,except as aforesaid, when the envelop is being filled, it is sometimesforced upward and outward and freedfrom engagement with the bottom flap.This is apt to happen frequently unless the operator is experienced.Another objection to the Neostyle envelop as heretofore made is thateven after it is filled and sealed, the loose flap is sometimes freedfrom its engagement with the top and bottom flaps and forced out. Thismay happen when pressure is suddenly exerted upon the sealed envelop,especially when several of them are piled up, one upon another,immediately after being sealed. When first sealed a considerable volumeof air is imprisoned in the envelop and the sudden expulsion of this airincident to compressing the pile of envelops, blows the loose flap out.Again the loose flap is sometimes forced out as the mail is beingdistributed or otherwise handled. This will happen if the envelop withits inclosure is so handled that the inclosure is thrown against theloose flap,

' especially if the inclosure is heavy.

The object of the present invention is to provide an envelop which hasall the advantages of the Neostyle and which, at the same time shall befree from the object-ions above pointed out.

To this end the invention consists in the features of novelty that arehereinafter described.

In the accompanying drawing which is made a part of this specification,Figure 1 is a diagrammatic representation of an envelop partly folded,embodying the invention. For the purposes of this application this iselected as the preferred form of the invention. Figs. 2 and 3 aresimilar views showing modifications.

In all of the figures of the drawing similar parts are indicated bysimilar reference letters.

A represents the front of the envelop, B the top or sealing flap, C thebottom flap, D the loose side flap and E the remaining side flap, theflaps C and E being fixedly secured together as hereinafter described.The drawing shows the side flaps folded to the positions which theyoccupy in the completed envelop, and shows the top and bottom flaps asthey appear in the blank, the positions which they occupy in thecompleted envelop, after the blank is folded on the dotted lines a anda, being indicated by the dot-ted lines 6 and 0, respectively.

In folding the envelop, the side flap E, is first folded down upon thefront A. The loose side flap D is then folded down upon the front, andalso upon the side flap E to the extent of a portion d which overlapsit. The bottom flap C is then folded down upon the front A and also uponboth of the side flaps. The adjacent sides of the bottom flap and theloose side flap overlap each other but they are not united in any way.The bottom flap G is then folded down upon the front A and also uponboth of the side flaps. A portion of the bottom flap overlaps and liesupon the outside of a portion of the loose side flap but they are notunited in any way. A portion of the bottom fiap C also overlaps and liesupon the outside of a portion of the side flap E, and limited areas ofthe surfaces of their overlapping portions are fixedly united or securedtogether by any suitable adhesive substance as shown by the shade linesF, thus leaving other limited areas of the surfaces of the overlappingportions ununited forming a pocket as shown at f. This adhesivesubstance may be applied to either or both of the said flaps, C and E,indiflt'erently. The shade lines on the several flaps arenotinof thefixed bottom and side flaps and adapted to engage the bottom side of thestop.

3. An envelop having a front, a bottom flap and a side flap, said sideflap being overlapped by the bottom flap, means for fixedly unitinglimited surface areas of the overlapping portions of said flaps, therebyforming a stop, and leaving limited surface areas of said overlappingportions ununited, thereby forming a pocket adjacent to said stop, and aloose side flap opposite the fixed side flap aforesaid, said loose flapbeing overlapped by the fixed bottom flap and having a portion lyingbetween the ununited portions of said overlapping portions of the fixedbottom and side flaps, that portion of the loose fiap which lies betweensaid ununited port-ions of the fixed bottom and side flaps having anangularly disposed shoulder presented toward the rear side of the stop.

t. An envelop having a front, a bottom fiap and a side flap, the sideflap being overlapped by the bottom flap, means for fixedly unitinglimited surface areas of said overlapping portions, thereby forming astop, and leaving limited surface areas of said overlapping portionsbelow said stop ununited, thereby forming a pocket below the stop, and aloose side flap opposite the fixed side flap aforesaid, said loose sideflap being overlapped by the fixed bottom flap and having a portionlying between the ununited portions of the overlapping portions of thefixed bottom and side flaps and adapted to engage the bottom of thestop, that portion of the loose flap which lies between the ununitedportions of the overlapping portions of the fixed bottom and side flapshaving on its top side an angularly disposed shoulder presented towardthe rear side of the stop.

5. An envelop having a front, a side flap, a bottom flap overlapping theside flap, means for fixedly uniting limited surface areas of saidoverlapping portions, thereby forming a stop, and leaving limitedsurface areas of said overlapping portions ununited, a loose side flapoverlapped by the fixed bottom flap and having a portion lying betweenthe ununited portions of said overlapping portions of the fixed bottomand side flaps, a fourth or sealing flap overlapping the fixed bottomand side flaps and also the loose flap, and an adhesive substance foruniting the sealing flap to at least one of the fixed flaps.

6. An envelop having a plurality of flaps and a stop, one of said flapsbeing loose and provided with a portion lying between ununitedoverlapping portions of two of the other flaps, and another of saidflaps being a closing or a sealing flap which overlaps all of the otherflaps, on the outside thereof, and an adhesive substance for uniting.said sealing flap with at least one of the fixed flaps, leaving theloose flap free to be with drawn.

7. An envelop comprising a plurality of flaps, sealing means forsecuring one of said flaps to another along one edge, an interruption insaid sealing means, and a flap having an angularly disposed tongueadapted to project through the sealed edge at said interruption.

8. An envelop comprising a plurality of flaps, means for securing saidflaps along one side, said flaps being unsecured along the other side,an interruption in said securing means, and a loose flap having anangular end adapted to project through the securing means of saidinterrupted portion.

9. An envelop comprising a plurality of flaps, means for securing saidflaps together at their edges, an interruption in said securing means, aloose flap having its edges covered by the secured flaps when in closedposition, said loose flap having an end passing between and projectingbeyond said flaps at said interruption.

GEORGE J. HARTKE.

Vitnesses JOHN ELIAS J ONES, NORMA Kmsnn.

Copies of this patent may be obtained for five cents each, byaddressing: the Commissioner of Patents, Washington, D. C.

